臺灣博碩士論文加值系統

在二,三十年前,科學家就以橋基含雙二價釕的 pypyrazine,
bipyridine及 bipyri-dine 的衍生物化合物作為混價化合物的探討,但是
發現兩個 Ru之間 communication 隨著共軛鍵的延長而減弱o本篇論文用
雙二茂鐵取代 pyrazine,bipyridine或bipyridine的衍生物所合成出含雙
毗啶基之雙二茂鐵化合物,將所合成出的化合物 (Di(2PyFc),Di(3PyFc)
,Di(4PyFc)),利用 UV-VIS,CV,FTIR 去研究一些價間電子轉移的性質o而
由 IR 光譜中知其為 Class II,從 CV 知其 Kc 值很大o 含雙毗啶
基之雙二茂鐵化合物與金屬配位後可以做長程電子轉移的先驅工作o

In early seventies ligand-bridged ruthenium ammine
complexes [(NH3)5Ru-L-Ru(NH3)5](4+,5+,6+) have been prepared
with L=pyrazine,4,4'-bipyridine,and 4,4'-bipyridine derivation
derivatives .Many of there compounds Ru(II)-L-Ru(III)belong
to class II of the Robin-Day classification,ie,the oxidation
states ofthe two metallic centers are still welll defined and
only a weak coupling betw-een ruthenium centers is observed.
Interest in long-range electron transfer through bipyridine
system ofthis type Ru(II)-L-Ru(III) where L=1,2-bis(4-
pyridyl)ethane or (E,E)-1,4-Bis(4-pyridyl)-1,3-bytadiene or (E,
E,E)-1,6-Bis(4-pyridyl)-1,3,5-hexatriene or (E,E,E,E)-1,8-Bis(4-
pyridyl)-1,3,5,7-octatetraene has been hammered by the
extremelyweak intervalence bands.In search of a system with
decent electronic interacti-on between the two ruthenium centers
, the follwing ligand Di(2PyFc),Di(3PyFc),Di(4PyFc) where
prepared and characterized.